I don't think re-writing in January would hurt your application this cycle, but I'm not sure how much you'd be able to raise your score in the 1.5 months left to study.
Besides, you have a reasonable shot at getting into Ryerson with your stats. Both your GPA and LSAT are well within the range of those who were accepted last year. Having said that, applications are way up this year, so its likely to be a very competitive cycle. I'd save that LSAT re-write and if you don't get in this cycle, then study really hard for the LSAT over the spring/summer and get your mark up for next September.
I was referencing the combination of business knowledge with a law school, not the the time and cost. From that perspective, an MBA and CPA are very much "apples to apples"-in the job market they are often fungible.